100% agree. That slightly neurotic insecurity makes her kin to Geno. It's been interesting to hear him talk about it in the past, and now we see DT with similar issues.
Incidentally, it seems to me (though I have no way of knowing) that this is one of the biggest differences between Maya and DT. Maya, for all her goodness and "nice" qualities as a person, is a true assasin on the court, and I think that in her heart of hearts she believes she can make a play against anybody, anytime, anywhere, and that she never goes to sleep at night with any type of chronic insecurities. Bria is similar, I think, though she doesn't quite rise to Maya's level of being an 'assasin' on the court. Almost no one does, of course.
I think Maya's competitive drive comes less from any insecurities and more from the sheer joy of beating the crap out of people (in the sporting sense) for 40 minutes. Tina had to learn how to adopt that mindset whereas for Maya it seems inborn. And she continues to pass it on to teammates in the "W" through osmosis.
We may end up reading Maya's autobiography years from now where she talks about having battled with just these kinds of mental hangups. But I doubt it.